Crushing-machine.



- APPLICATION FILED JUHE 13, 1905,' RENEWED JAN. 30, 1907.

I PATENTED MAY 14. 1907. 1a L. & T. J. STURTBVANT.

' GRUSHING MACHINE.

s SHEETS-SHEET 1.

No. 953.656. PATENTED MAY 14.1907.

- T. L. & T. J. STURTBVANT.

GRUSHING MAGHINE. APPLIOATION FILED 'J UNE 13. 1905. RENEWED JAN.-3 O, 1907.

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$10,853,656. v PATENTED MAY 14, 1907.

T. L. & T. J; STURTEVANT ORUSHING MACHINE.

kPPLIGATION FILED mm: 13, 1906. RENEWED JAN. 30, 1901.

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first I rarer osricn moms LEGGETT STURTEVANT,

F QUINCY, AND THOMAS JOSEPH STURTEVANT, OF WELLESLEY, MASSACHUSETTS, ASSIGNORS TO STURTEVANT MILL COMPANY, OF PORTLAND, MAIN 1,, A CORPORA- rioN or MAINE.

GRUSHENG WEACHlNEQ assess.

Specification of Letters Patent.

Patented m 14, 1907.

Application filed June 13,1965. Renewed January 30, 1907! Serial No. 354,909.

To (all whom it may concern: I Be it known that we, THOMAS LEGGETT droittmmbfr and THQMAS JOSEPH STURTE- velar, both citizens of the United States, re-

siding, respectively, at Quincy and Wellesey, in the county of Norfolk and State of tiassaci'iusetts, have invented or discovered and useful Improvements 1n certain new CruShing-lviachines, of which the following is aspeeification, reference being bad therein to the accompanying drawings. v r

This invention relates to certain improvements on the-rocking jaw crushing I'nachines shown and described in bur U. S Patents 105,575, July 19; 1898, and 777,227,,

December 13-, 190 t; the present invention having for its ob ect to prov1de an improved operating mechanism for the oscill'a ting jaw fran'ie or lever which carries the of the crusher, and winch movable j aw has a rolling crushing action on the material held between itself'and' the stationary jaw of the crusher.

In the accompanying drawlngs, Figure 1 is aplan view of our improved crushing mach ne and Fig. 2 1s a vert1cal sect1 0n of, the

same on line\ 2--2, of ig. I. Flg; 3 is a transverse sectional view of the machine "in the plane of the axis of the driving shaft, looking from the right ot Flgs, 1 and 2. j Referring to the drawings, 12 denotes the frame of the machine which may be of substantially the same construction as 1n the: machine shown and described-1n our said Patent No. 777,227. Mounted in the said frame is therdriving-shaft 13 carry Wheels 14, the drivm ver 17 is hun or suspended at its forward end to a crossar 18,1? iported 15y the'fiame 1:2, by means of a broad llnk 19 thelower portion of which engages a p1v0tbolt20. on the jaw frame or lever 17. h Ioun-tedint t herear.

portion of the jaw frame or lever-'17 is a roller .21 which rests upon the eccentric '16 and is forced downward against said eccentric bye,

suitable spring or springs 22, confined bo tween. a portion of t he said aw frame or-le-ver movable j aw i 7 s fly 'pulley15 and an ec centric 16. The osc llating jaw frame'or 16':

Agains the.

ends of the said s pi'ings breferably abut against bearing in. suitable lined sockets in said jaw-frame or lever: 17 and said cross-bar 23.

The movable or. rocking-jaw 26 is preferably pivotally attached at its upper end to the forward end of the jaw frame or lever 17 and pressed against at its lower end by springs 27 encirclin. bolts 28' connecting the lower ortion of sai' jaw with the lower'portion of the jaw frame or lever \17,,so that the said movable jaw is elastically or yieldingly mounted on the said jaw frame or lever, as will be understood. The said movable jaw normally stationary front jaw plate 30 mounted on the normally stationary block or jaw 31, which latter is, however, preferably vertically adjustable on the frame ofthe ma chine by means of screw construction shown in our said Patent No. 777,227. 4

. The jaw frame or lever 17 is backed against suitable abutments 36 on the stationary frame 12 by tog le links 33,, as in the machines of our said patents; so that when the driving shaftl13 is rotated the'ecccntric 16 thereon, and against which the roller 21 bears, will cause rising said jawframe in such a manner as to cause rolling crushing movements to be imparted to the movable jaw plate 29 to crush the material held in the receptacle between said [movable jaw plate and the stationary jaw plate 30,. I

In a crushing machine of the class herein shown and described, and in which the rocking jaw frame or lever is loosely hung to the frame of the machine at its forward end, as by the link-'19, and is loosely backed against the frame of the machine atits rear endloy the toggles 33, the rocking jaw has a rolling movements, to cause crushing action,, of course effected, in the construction. herein shown, by the cam or eccentric 16, and'the downward movements, to cause. crusbin ac ticn, being effected by the springs 22 W1 ch soliiciently stiff and powerful fori-thispur pose. 'ilms-in this improved machine the plates 34 hav1ng convex ribs seated 26 carries a jaw plate 29 co-operatin with a crushing action at both the upward and't'he. downward movements of the rearend of the said rocking j aw-frame' or lever; the upward a being and permit falling movements to be imparted to the rear end of crushingoperation. is partly siiootod by the Px zinsion of tho sprin 9 J2 proviously (zomprossod n t the l1} )Wz-i!i who of the rear end ol' the roi"..nw znv frame or hvor as tho hitt '1 i positively it and by the com or ottoontrio l6. 'lhe roiling .inovomon ts, above referred to, of tho rocking jaw 26 carried by the rocking jam; trunnil7, so a; I crushing movements at what mo forward and tho hznzlu jaw, uro duo partly to ho iooss manner in which the said roolziug aw trams is loosely suspondod at its tormid and. to the machine frame by tho i'inh; it, and part to the mani. in 'W'diifli said rocking; in me is open- :i-tod. by tho conjoint notion oi the eccentric l6 and. springs 22 in such. a, manner that tho forward. ends ot the to in link; 32%; riso and inli ohm o and below their roar (ends hitching that \v'ittl'l m :1

against the {:hutinonts 56;

toriui to ho crushed is ontwo in the timid and Lil struotions iorotol oro I springs iiitrVfllJitl in p uoie pinto will n iixod pinto as tho uppm :21 plate trsveis l gju'wnrd when the machine is in crushing operation, thus producing; roiling orusl'iing notion at both forward and hot-in Ward movomonts of the rocking jaw as the roar end of the said rocking jo-w rises and fails when oo-oporstivoiy notustml by the said econ trio 16 and springs 22.

'ihs improved o orotio mechanism. for the jaw tra ns or it .i 1T horoin shown and described, and in whioh the movoinonts oi the said jobs fro-int or 101' on: imported thereto by the otroontrio or 1 in i6 d tho opposing spring or SlH'iYEg'S prov: i828 for more olnstioit u tho rr L movements oh the said jaw 'imzno or -na-r mu in the con do, l: r 1 tltli, tho n is loss dun; ol lnfouliugv of tho it ii 33 or other iii'shio psi when on unusual resistance .3 oli orod to tho L hin .naion oi the -uvs when i hard motor iv fed, into tho miil or soridentnily gots into the mcoptu-ols between tho stationary and mowihlo jaw pistes. This result due to tho that the springs 22 not, in u measure, or in roiiot springs, so its to yishi under any om ossivo str in or resistance, and in this mannor o -op mto with the jaw roiiol springs 27: and even if t e instnamod springs wore not ompioyed the mo shin 11m '26, mounted Qntho toggie-huokod the .on'or end oi :irzii i oro o rocking jaw frame or lever 17, would still he more or 198:; oushionod or reiievod Whon exposed to excots. ve strain, and doubly cushioned or relieved in. the coz i .Uo-iion'herein sl'iown ompioying tho ti 5 of springs 22 nhd 27, the amount oi compression of tho being;- determined tho stiffness of the springs 2:2. For oxiunpio, should a sledge hsnnnor he nor-idoutsi ly dropped into the roceptz-trio between the juw pistes there Wonk he i l r of hroi'ihugo to the msohine with the improved oporatii'ig nioolmu ism heroin shown than in the coustruvtions shown by our prior patents in which tho rocking jaw fifun'ios or lovers are oporutod from the driving shnl'ts of tho muohinos by pitmen connections with the driving M17011 tries or cranks.

A still greater advantage in tho now-l construction, over the old. resides, however, in oi'uihli ig the connecting-md or pit-man, by which the rocking jaw frame was t'ormorly operated from an eccentric: on the driving shaft, to be dispensed with, us in tho use of such operatingconnecting-rod or pit man, the hearings thereof, it not kept in perfect udustmont, often pounded to kilestruction owing to the severe strain neco nrily incidentai to the use of the n'uiohinos'in which such opomting counouting-rods or pitmon were employed.

W silo we prefer to import positi vo upward movements to tho rocking: jaw frame or leirom the oi nztlti ino'viihio war, by a; com or (vcrontrir, and yioiding downward movements by th spring; or swings 22, it will ho undo -:tood tlml this construction might, be reversed and. tho upward movements ho imparted to tho said jaw frame or lever by springs and. the dmrmvord movements by a cam or eccentric. The invention is thervl'oro not to he understood as being limited to the details of ormstrurtion heroin shown, thoso may he vorivd within the province of .niocluiniwd shill .-.il'll()lil, d0- pnrting from the spirit of tho invvln'ion. i oroxomplo, thorookiu nu int 1 might be rigidly iiiountod on tho; orlung inn irmnoor ievor instead of honig mouutr-d on tho yioldmg jaw 26, and tho noromllv stutionm'y l'ront jmv pinto :20 might lie riohlinggly o'iountod rclutii'o to tho mut'hino .i'rumo.

Living thus dr-scriln-ul on im z-ntion we Claim and desire to socuro l Lottrrs Pulontr i. in :1 crushing: nun-him, tho comhinutimi with 2L stutioijnu'y jaw and a XH-JYfllilC imv 'ooperating therewith. of a horizontally oxtonding rocking jaw trauma or lover carrying said movable jaw, a rot-still; (um or orccntric for importing (rushing moronionts to the said rocking jaw frame or lover in our diroolion, and s spring or springs, wuuprcssml liy said own or eccentric, tor vll'crting m'ushing movements of the said rocking 5m lrznnoor lever in the opposite direction.

2. In s crushing machine, the vo'mhinotion with. a stationary jaw and u morn lilo jaw oooperziting therewith, of a rocking 'nw frame or lever on which said. novuhlo jaw is yieldingly mounted snd'whioh rooking jaw mine is loosely hung to the tonne of the machine its forwmwi and and is loosely hnrhvd by toggles against the machine fmmo at its rear end, 9, rotating cam or cccontrio ior import ing-fiiovomontsto the sni d 1'() 'l\'lh, jaw trains or lover in 0H6 direction, and a spring; or

stance springs for effecting the movements of said aw frame or lever in the opposite direction. 3. In a crushing machine, the combination with a stationary jaw and a movable jaw co {operating therewith, of a horizontally eX- tending rocking jaw frame or lever carrying saidv movable aw, said rocking jaw frame being loosely hung to the frame of the machine at its forward end' by a link and being backed by to gles against said frame at its rear end, a To] er mounted in the rear end of the said rocking jaw frame or lever, a rotating cam or eccentric against which said roller bears, and spring mechanism for effecting movementsof said rocking jaw and rocking jaw frame in opposition to the'movements imparted by said cam or eccentric.

4, In a crushing machine, the combination with a stationary jaw and a movable jaw cooperating therewith, of a rocking jaw frame or lever on which said movable jaw is yieldingly mounted, and which is loosely hung to the frame of the machine at its forward end suspended from said machine'frame at its forwardend and provided with a roller at its rear end, a movable jaw carried by said rocking jaw frame or lever, a rotating cam or'eccentric a ainst which said roller bears, togles loosefi backing the rear end of said jaw frame or lever against the machine frame, and spring mechanism fer effecting movements of said rocking jaw; frame or lever in oppositlon to the moverpents effected bysaid cam or eccentric.

6. In a crushin machin e, the combination with the frame thereof, of a statiena mounted on said frame, a rocking jaw ame or lever loosely suspended from said machine frame atits forward end and provided with a roller at its rear end, a movable jaw yieldingly mounted on said jaw -frame 0r lever, a rotating cam or eccentric against which said roller bears toggles loosely backing the rear end of said rocking jaw frame against the machine frame, and s v rin mechanism for effecting movements 0 sai jaw or lever in opposition to the movements effected by said cam or eccentric.

j 7. In acrushin of a front jaw and a rocking lever jaw opposite the same and eo-operatin therewith, of a relief'springor apringsfor and rocking lever jawmachine, the combination direction, and a stprin ing movements 0 said the opposite direction, and which lastnamed spring or springs co-operate with the first-namedspring or springs for effecting jaw relief.

with a stationary jaw, of a movable jaw, a horizontally disposed rocking jaw frame on which said movable jaw iamounted, a cam ing to. impart alternate movements to said movable jaw by being previously compressed by the operation of said cam or eccentric.

9. In'a crushing machine, the combination of a front jaw, a rocking jaw opposite the same and co operating therewith, and a hori Zonta'ily extending rocking jaw frame or lever which is pivotally supported from the machine frame near its front end and which gles, of a cam or eccentric and co-operating springs for imparting vibrating movements said rocking jaw.

10. In a.crushing machine, ,the combination of a normally stationary front jaw and an opposing rockmg jaw, a rocking lever, 'a swinging link by which sald rocking frame or lever is supported on the machine frame near .its front end, means for movably lever against the machine frame, and a cam or eccentric and opposing sprmgs for 1mpartframe or lever carrying said rocking jaw..

tion with a stationary jaw and a movable jaw co-operating therewith, of a horizonjaw frame or lever at the forward end 0 'rear' end of whic reciprocates vertically, said rocking jaw frame or lever being provided with a bearing-roller at its rear-end, a rotating cam or eccentric for imparting vertical movements to the said rear end of the tion and against which cam or eccentric said roller bears,'Iand-a spring or springs, compressed by s id cam oreccentric, for effector lever in he opposite direction.

tures, in presence of two witnesses.

. THOMAS LEGGE'IT STUR'IEVIINT. i THOMAS JOSEPH STURTEVANT.

Witnesses; EDNA- M.H1L'r0N,

Gnaon G. Gonranv.

8, In a crushing machine, the combinationor eccentric, a spring or springs opposing the action; of the said cam or eccentric and servj is backed at its rear end by a toggle or t og' frame or ing vibrating movements to said .rockin'g m5 11;;In a crushing machine, the combinasaidrocking jaw frame .or level" inone dime-,-

j aw, a rotating cam or eccentric for imparting movements to said rocking jaw in one or sprin s for effect-' rocking ever jaw in a to the' rear end of sald rocking jaw frame or 1 lever and rocking crushing movements to tally extending and bodily movable rockin f f I 1rd which the said nfovable jaw is mounted'soas to be entirely su ported thereby and the v mg movenlgnts of the said rocking jaw frame .In testimony whereof; we affix our signsa 1 0c backing the rear end of said rocking frame or 

